Time and Work Questions of Quantitative Online Test

A can do some work in 12 hours, B can do the same work in 16 hours and C can do the same work in 30 hours. They start working together. A left after 3 hours and B left after working for 4 hours. How many more hours are required to complete the whole work after B has left?
15 hrs
11 hrs
12 hrs
9 hrs
10 hrs
A and B can do a work in 15 days, B and C can do it in 20 days. If B alone can do it in 60 days, in what time will A and C do it together?
15 days
17 days
16 days
18 days
12 days
A & B undertake to do a piece of work for $ 300. A can do it in 15 days and B can do it in 30 days. With the help of C, they finish it in 5 days. How much C should be paid for his contribution?
$ 100
$ 150
$ 75
$ 160
$ 90
Rose and Mary can paint a building in 10 and 12 days respectively. If they work on alternate days, in how much time will the building be painted, if Rose starts painting first?
10 1/6 days
10 5/6 days
11 5/6 days
12 5/7 days
13 5/6 days
5 men or 12 boys can do a piece of work in 39 days. How many days will be taken by 16 men and 24 boys to do a work, which is twice as great as the original work?
12
15
17
20
18
A is thrice as good a workman as B and takes 16 days less to do a work as B takes. In how many days B will finish the work?
18
24
20
22
25
If A can do a work in 30 days and B can do the same work in 45 days, then how many days will be taken by them working together to complete the work?
15
20
14
18
22
Description:

This is a short test on Time and work of quantitative aptitude
Disclaimer: Content, such as images used in the questions (if any), have been picked up from various places for the sole purpose of Instruction.

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